I have actually been thinking if I should start a new Steam account or several. The blast radius of losing the current one for some reason would be devastating. Also wondering if it would be at all effective (not too hard to see the same credit card used between two accounts).
Steam could alleviate the new account requirement by having a "cheat" counter. If you do more than, say, five actions that look like a cheat, then a real person on their side looks at the problem. Or, have a cheat counter that waits until twenty or fifty cheating actions before auto-banning, if they want to make it cheaper for them.